Simple and rapid pressing test device for hydraulic support stand column

Abstract

The utility model provides a simple and rapid pressing test device for a hydraulic support column, and relates to the technical field of column and jack maintenance, the simple and rapid pressing test device comprises a base, a support frame and a column, one side of the base is provided with a pump box, and a pressing test mechanism is arranged between the column and the pump box; according to a power source provided by the emulsification pump station, hydraulic oil in the pump box enters the rapid liquid supply valve through the high-pressure rubber pipe and enters the manual operation valve through the high-pressure rubber pipe, and the rapid liquid supply valve enters the stand column stretching cavity through the high-pressure rubber pipe and enters the stand column receiving cavity through the high-pressure rubber pipe; liquid enters the manual operation valve receiving cavity to the rapid liquid supply valve through the high-pressure rubber pipe, liquid enters the manual operation valve extending cavity to the rapid liquid supply valve through the high-pressure rubber pipe, then the manual operation valve is operated to open a valve element of the rapid liquid supply valve to increase the flow, and rapid liquid supply of the stand column extending cavity and the receiving cavity pressing test is achieved. Meanwhile, stand column return liquid, rapid liquid supply valve return liquid and manual operation valve return liquid are connected to the pump box in parallel, and the function of automatically collecting return liquid is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of column maintenance technology, in particular to a simple and rapid pressure test device for hydraulic support columns. Background Technique

[0002] Hydraulic supports are important equipment used to support the roof and maintain the stability of roadways or working faces in underground mining operations such as coal mines. Among them, columns and jacks are two core components of hydraulic supports, and they jointly undertake the tasks of supporting and adjusting the roof pressure. With the development of science and technology, the working resistance and support height of the new generation of hydraulic supports have also been continuously improved, and the cylinder diameter of the columns of hydraulic supports has also increased accordingly.

[0003] Taking the column of ZZ13000 / 27 / 60D type hydraulic support as an example, with a cylinder diameter of Φ360mm, when directly supplying liquid by an emulsion pump for pressure test during column maintenance, each column requires 5 minutes and 20 seconds for the extension chamber, 5 minutes and 20 seconds for the retraction chamber, and 5 minutes for the pressure holding test. The return liquid cannot be automatically collected, and the efficiency of extending and retracting the column is low, time-consuming and laborious. Therefore, the utility model proposes a simple and rapid pressure test device for hydraulic support columns and jacks to solve the above problems. Content of the Utility Model

[0004] In view of the above problems, the utility model proposes a simple and rapid pressure test device for hydraulic support columns to solve the problems of the influence brought by the pressure-bearing capacity of the rubber hose when the liquid supply charging flow of the rapid liquid supply valve increases and the difficulty of automatically collecting the return liquid in the prior art.

[0005] To achieve the purpose of the utility model, the utility model is realized through the following technical solutions: A simple and rapid pressure test device for the top of a hydraulic support column, including a base, a support frame and a column. On one side of the base, support frames are symmetrically arranged. Inside the support frames, columns are arranged. On one side of the base, a pump box is arranged. On the outer side of the column, an extension chamber port and a retraction chamber port are respectively arranged. Between the column and the pump box, a pressure test mechanism is arranged.

[0006] Further improvement lies in that: The pressure test mechanism includes an emulsion pump station, a rapid liquid supply valve, a manual operation valve and a high-pressure rubber hose. The emulsion pump station, the rapid liquid supply valve and the manual operation valve are respectively installed on the top of the base. Between the column, the emulsion pump station, the rapid liquid supply valve and the manual operation valve, they are interconnected through high-pressure rubber hoses.

[0007] Further improvement lies in that: The output end of the pump box is connected to the input end of the emulsion pump station through a high-pressure rubber hose, and the output end of the emulsion pump station is connected to the input end of the rapid liquid supply valve through a high-pressure rubber hose.

[0008] A further improvement lies in that: the output end of the quick liquid supply valve, the input end of the manual operation valve, the input end of the pump box, and the liquid receiving port of the column are connected in parallel through a four-way valve, and the output end of the manual operation valve is communicated with the liquid extending port of the column through a high-pressure rubber hose.

[0009] A further improvement lies in that: both ends of the column respectively pass through the inner sides of two support frames, and a limiting mechanism is provided at the top of the support frame.

[0010] A further improvement lies in that: the limiting mechanism includes a handwheel, a limiting block, and a threaded rod. A limiting block is provided inside the support frame. The top of the support frame is threadedly connected with a threaded rod. The bottom end of the threaded rod is rotatably connected to the top end of the limiting block, and the top end of the threaded rod is fixedly connected with a handwheel.

[0011] A further improvement lies in that: sliding grooves are symmetrically provided on both sides of the support frame, and both sides of the limiting block are slidably connected to the inner walls of the sliding grooves. V-shaped grooves are provided at the bottom ends of both the limiting block and the support frame.

[0012] The beneficial effects of the present utility model are as follows: the power source provided by the emulsion pump station feeds the hydraulic oil in the pump box into the quick liquid supply valve through a high-pressure rubber hose, and into the manual operation valve through a high-pressure rubber hose. The quick liquid supply valve feeds the liquid into the liquid extending cavity of the column and into the liquid receiving cavity of the column through high-pressure rubber hoses. The liquid receiving cavity of the manual operation valve feeds the liquid into the quick liquid supply valve through a high-pressure rubber hose, and the liquid extending cavity of the manual operation valve feeds the liquid into the quick liquid supply valve through a high-pressure rubber hose. The quick liquid supply valve, the manual operation valve, and the column are connected in parallel to the emulsion pump station through a four-way valve. By operating the manual operation valve to open the valve core of the quick liquid supply valve to increase the flow rate, rapid liquid supply for the liquid extending cavity and liquid receiving cavity of the column during the pressure test is realized. At the same time, the liquid return of the column, the liquid return of the quick liquid supply valve, and the liquid return of the manual operation valve are connected in parallel to the pump box to realize the function of automatic liquid return collection. Description of the Drawings

[0013] Figure 1 is the front view of the present utility model;

[0014] Figure 2 is the side view of the present utility model;

[0015] Figure 3 is the structural schematic diagram of the limiting mechanism of the present utility model.

[0016] Wherein: 1, base; 2, support frame; 3, column; 4, pump box; 5, emulsion pump station; 6, quick liquid supply valve; 7, manual operation valve; 8, pressure gauge; 9, four-way valve; 10, high-pressure rubber hose; 11, handwheel; 12, V-shaped groove; 13, limiting block; 14, threaded rod; 15, sliding groove. Detailed Embodiment

[0017] To deepen the understanding of the present utility model, the following will further elaborate on the present utility model in conjunction with embodiments. These embodiments are only used to explain the present utility model and do not constitute a limitation to the protection scope of the present utility model.

[0018] According to Figure 1 、 2 、as shown in Figure 3, this embodiment proposes a simple and rapid pressure test device for a hydraulic support column, which includes a base 1, a support frame 2, and a column 3. On one side of the base 1, support frames 2 are symmetrically arranged. Inside the support frames 2, there is a column 3. On one side of the base 1, there is a pump box 4. On the outer side of the column 3, there are respectively an extension cavity port and a retraction cavity port. Between the column 3 and the pump box 4, there is a pressure test mechanism. The column 3 is restricted to the top of the base 1 through the support frame 2. The pressure test mechanism is connected to the extension cavity port and the retraction cavity port of the column 3. Through the pressure test mechanism, the hydraulic oil inside the pump box 4 is transported into the inside of the column 3, enabling the column 3 to perform telescopic movement. After the test is completed, the hydraulic oil is transported back into the inside of the pump box 4.

[0019] The pressure test mechanism includes an emulsion pump station 5, a quick supply valve 6, a manual operation valve 7, and a high-pressure hose 10. On the top of the base 1, an emulsion pump station 5, a quick supply valve 6, and a manual operation valve 7 are respectively installed. Between the column 3, the emulsion pump station 5, the quick supply valve 6, and the manual operation valve 7, they are interconnected through the high-pressure hose 10. The output end of the pump box 4 is connected to the input end of the emulsion pump station 5 through the high-pressure hose 10. The output end of the emulsion pump station 5 is connected to the input end of the quick supply valve 6 through the high-pressure hose 10. The power source provided by the emulsion pump station 5 feeds the hydraulic oil in the pump box 4 into the quick supply valve 6 through the high-pressure hose 10, and into the manual operation valve 7 through the high-pressure hose 10. The quick supply valve 6 feeds the liquid into the extension cavity of the column 3 through the high-pressure hose 10 and into the retraction cavity of the column 3 through the high-pressure hose 10. The retraction cavity of the manual operation valve 7 feeds the liquid into the quick supply valve 6 through the high-pressure hose 10, and the extension cavity of the manual operation valve 7 feeds the liquid into the quick supply valve 6 through the high-pressure hose 10. The quick supply valve 6, the manual operation valve 7, and the column 3 are connected in parallel to the emulsion pump station 5 through a four-way valve 9.

[0020] The output end of the quick supply valve 6, the input end of the manual operation valve 7, the input end of the pump box 4, and the retraction cavity port of the column 3 are connected in parallel through a four-way valve 9. The output end of the manual operation valve 7 is connected to the extension cavity port of the column 3 through the high-pressure hose 10. By operating the manual operation valve 7 to open the spool of the quick supply valve 6 to increase the flow rate, rapid liquid supply for the pressure test of the extension cavity and retraction cavity of the column 3 is achieved. At the same time, the liquid return of the column 3, the liquid return of the quick supply valve 6, and the liquid return of the manual operation valve 7 are connected in parallel to the pump box 4 to achieve the function of automatic liquid return collection.

[0021] Both ends of the column 3 pass through the inner sides of two support frames 2 respectively. A limiting mechanism is provided at the top of the support frame 2. The limiting mechanism includes a handwheel 11, a limiting block 13 and a threaded rod 14. The limiting block 13 is arranged inside the support frame 2. The threaded rod 14 is threadedly connected to the top of the support frame 2. The bottom end of the threaded rod 14 is rotatably connected to the top end of the limiting block 13. The top end of the threaded rod 14 is fixedly connected to the handwheel 11. Slide grooves 15 are symmetrically arranged on both sides of the support frame 2. Both sides of the limiting block 13 are slidably connected to the inner walls of the slide grooves 15. One end of the column 3 is inserted into the support frame 2 and continues to move forward through the inside of another column 3. By turning the handwheel 11 to drive the threaded rod 14 to rotate forward and backward at the top of the support frame 2, and the limiting block 13 is rotatably connected to the bottom end of the threaded rod 14, so as to drive the limiting block 13 to reciprocate up and down along the inner wall of the slide groove 15, that is, drive the limiting block 13 to fit with the outer wall of the column 3 to limit it on the top of the base 1, or drive the limiting block 13 away from the column 3 to take it out of the support frame 2.

[0022] V-shaped grooves 12 are provided at the bottom ends of both the limiting block 13 and the support frame 2. The V-shaped grooves 12 can make the limiting block 13, the inner wall of the support frame 2 and the outer wall of the column 3 fit more closely, which is convenient for limiting the position of the column 3.

[0023] For the simple and rapid pressure test device of the hydraulic support column and jack, the power source provided by the emulsion pump station 5 feeds the hydraulic oil in the pump box 4 into the quick supply valve 6 through the high-pressure hose 10, and feeds it into the manual operation valve 7 through the high-pressure hose 10. The quick supply valve 6 feeds the liquid into the extending cavity of the column 3 and the retracting cavity of the column 3 through the high-pressure hose 10. The retracting cavity of the manual operation valve 7 feeds the liquid into the quick supply valve 6 through the high-pressure hose 10, and the extending cavity of the manual operation valve 7 feeds the liquid into the quick supply valve 6 through the high-pressure hose 10. The quick supply valve 6, the manual operation valve 7 and the column 3 are connected in parallel to the emulsion pump station 5 through a four-way valve 9. By operating the manual operation valve 7 to open the spool of the quick supply valve 6 to increase the flow rate, rapid liquid supply for the pressure test of the extending cavity and retracting cavity of the column 3 is realized. At the same time, the liquid return of the column 3, the quick supply valve 6 and the manual operation valve 7 are connected in parallel to the pump box 4 to realize the function of automatic liquid return collection.

[0024] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A simple and rapid pressure test device for a hydraulic support column, comprising a base (1), a support frame (2) and a column (3), characterized in that: On one side of the base (1), support frames (2) are symmetrically arranged. Inside the support frames (2), there are columns (3). On one side of the base (1), there is a pump box (4). On the outer side of the column (3), there are an extension cavity opening and a retraction cavity opening respectively. Between the column (3) and the pump box (4), there is a pressure test mechanism. The pressure test mechanism includes an emulsion pump station (5), a quick liquid supply valve (6), a manual operation valve (7), and a high-pressure rubber hose (10). On the top of the base (1), an emulsion pump station (5), a quick liquid supply valve (6), and a manual operation valve (7) are respectively installed. Between the column (3), the emulsion pump station (5), the quick liquid supply valve (6), and the manual operation valve (7), they are interconnected through a high-pressure rubber hose (10).

2. The simple and rapid pressure test device for the hydraulic support column according to claim 1, wherein: The output end of the pump box (4) is connected to the input end of the emulsion pump station (5) through a high-pressure rubber hose (10). The output end of the emulsion pump station (5) is connected to the input end of the quick liquid supply valve (6) through a high-pressure rubber hose (10).

3. The simple and rapid pressure test device for the hydraulic support column according to claim 2, characterized in that: The output end of the quick liquid supply valve (6), the input end of the manual operation valve (7), the input end of the pump box (4), and the retraction cavity opening of the column (3) are connected in parallel through a four-way valve (9). The output end of the manual operation valve (7) is connected to the extension cavity opening of the column (3) through a high-pressure rubber hose (10).

4. The simple and rapid pressure test device for the hydraulic support column according to claim 1, characterized in that: Both ends of the column (3) pass through the inner sides of the two support frames (2) respectively, and a limiting mechanism is arranged at the top of the support frames (2).

5. A simple and rapid pressure test device for a hydraulic support column according to claim 4, characterized in that: The limiting mechanism includes a handwheel (11), a limiting block (13), and a threaded rod (14). Inside the support frame (2), there is a limiting block (13). The top of the support frame (2) is threadedly connected with a threaded rod (14). The bottom end of the threaded rod (14) is rotatably connected to the top end of the limiting block (13). The top end of the threaded rod (14) is fixedly connected with a handwheel (11).

6. The simple and rapid pressure test device for the hydraulic support column according to claim 5, characterized in that: On both sides of the support frame (2), chutes (15) are symmetrically arranged. The two sides of the limiting block (13) are slidably connected to the inner walls of the chutes (15). V-shaped grooves (12) are arranged at the bottom ends of both the limiting block (13) and the support frame (2).

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